Single-leg glute bias with a stable kickstand.
The front leg is just a kickstand. Push through the back heel, not both legs evenly.
The B stance splits the difference between two legs and one: the working foot is planted flat and takes the vast majority of the barbell load, while the front heel just kisses the floor for balance. That means single leg glute bias, each side trained in turn, without the wobble that makes true single leg thrusts hard to load. The hamstrings assist as the hips drive to full lockout.
The single leg version lifts the non working leg completely off the floor, which is harder to balance and load. The B stance keeps a kickstand heel down, so you get most of the single leg stimulus while still moving respectable weight.
Noticeably less, since one glute is doing nearly all the work. Start light, prove the front leg is staying passive, and build from there. If the load matches your two leg thrust, your kickstand is cheating.
Staggered ahead of the working foot, resting on its heel with the toes up. That position makes it almost impossible for the front leg to push, which is the entire point of the stance.
